4161785 has 8 divisors (see below), whose sum is σ = 5046216. Its totient is φ = 3294720.

The previous prime is 4161769. The next prime is 4161791. The reversal of 4161785 is 5871614.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32761 + 4129024 = 181^2 + 2032^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4161785 - 2⁴ = 4161769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806 + ... + 4775.

It is an arithmetic number, because the mean of its divisors is an integer number (630777).

Almost surely, 2^4161785 is an apocalyptic number.

It is an amenable number.

4161785 is a deficient number, since it is larger than the sum of its proper divisors (884431).

4161785 is an equidigital number, since it uses as much as digits as its factorization.

4161785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8683.

The product of its digits is 6720, while the sum is 32.

The square root of 4161785 is about 2040.0453426333. The cubic root of 4161785 is about 160.8520302449.

The spelling of 4161785 in words is "four million, one hundred sixty-one thousand, seven hundred eighty-five".